<template>
  <div class="app-container">
    <!--查询表单-->
    <el-card class="operate-container" shadow="never">
      <el-form :inline="true" class="demo-form-inline">
        <el-form-item label="名称">
          <el-input v-model="searchObj.name" placeholder="讲师名"/>
        </el-form-item>

        <el-form-item label="头衔">
          <el-select v-model="searchObj.level" clearable placeholder="头衔">
            <el-option value="1" label="高级讲师"/>
            <el-option value="2" label="首席讲师"/>
          </el-select>
        </el-form-item>

        <el-form-item label="入驻时间">
          <el-date-picker
            v-model="searchObj.joinDateBegin"
            placeholder="开始时间"
            value-format="yyyy-MM-dd"/>
        </el-form-item>
        <el-form-item label="-">
          <el-date-picker
            v-model="searchObj.joinDateEnd"
            placeholder="结束时间"
            value-format="yyyy-MM-dd"/>
        </el-form-item>

        <el-button type="primary" icon="el-icon-search" @click="fetchData()">查询</el-button>
        <el-button type="default" @click="resetData()">清空</el-button>
      </el-form>
    </el-card>

    <!-- 工具按钮 -->
    <el-card class="operate-container" shadow="never">
      <i class="el-icon-tickets" style="margin-top: 5px"></i>
      <span style="margin-top: 5px">数据列表</span>
      <el-button class="btn-add" @click="add()" style="margin-left: 10px;">添加</el-button>
      <el-button class="btn-add" @click="batchRemove()" >批量删除</el-button>
    </el-card>

    <!-- 表格 -->
    <el-table
      :data="list"
      border
      stripe
      @selection-change="handleSelectionChange">
      <el-table-column type="selection"/>
      <el-table-column
        label="#"
        width="50">
        <template slot-scope="scope">
          {{ (page - 1) * limit + scope.$index + 1 }}
        </template>
      </el-table-column>
      <el-table-column prop="name" label="名称" width="80"/>
      <el-table-column label="头衔" width="90">
        <template slot-scope="scope">
          <el-tag v-if="scope.row.level === 1" type="success" size="mini">高级讲师</el-tag>
          <el-tag v-if="scope.row.level === 2" size="mini">首席讲师</el-tag>
        </template>
      </el-table-column>
      <el-table-column prop="intro" label="简介"/>
      <el-table-column prop="sort" label="排序" width="60"/>
      <el-table-column prop="joinDate" label="入驻时间" width="160"/>
      <el-table-column label="操作" width="200" align="center">
        <template slot-scope="scope">
          <el-button type="text" size="mini" @click="removeById(scope.row.id)">删除</el-button>
          <router-link :to="'/vod/teacher/edit/'+scope.row.id">
            <el-button type="text" size="mini">修改</el-button>
          </router-link>
        </template>
      </el-table-column>
    </el-table>

    <!-- 分页组件 -->
    <el-pagination
      :current-page="page"
      :total="total"
      :page-size="limit"
      :page-sizes="[5, 10, 20, 30, 40, 50, 100]"
      style="padding: 30px 0; text-align: center;"
      layout="total, sizes, prev, pager, next, jumper"
      @size-change="changePageSize"
      @current-change="changeCurrentPage"
    />

  </div>
</template>

<script>

    import teacherApi from "@/api/vod/teacher";

    export default {

        data() {
            return {
                list: [], // 讲师列表
                total: 0, // 总记录数
                page: 1, // 页码
                limit: 10, // 每页记录数
                searchObj: {}, // 查询条件
                multipleSelection: []// 批量删除选中的记录列表
            }
        }, created() {

            this.fetchData();

        }, methods: {
            handleSelectionChange(selection){
                this.multipleSelection = selection;
            },

            add(){

                this.$router.push({path:'/vod/teacher/create'})

            },
            //批量删除
            batchRemove(){

                if (this.multipleSelection.length ===0){
                    this.message.warning('请选择要删除的记录')
                }else {
                    this.$confirm('此操作将永久删除该讲师信息，是否继续？','提示',{
                        confirmButtonText: '确定',
                        cancelButtonText: '取消',
                        type: 'warning'
                    }).then(()=>{
                        var idList = [];
                        for (var i=0 ;i<this.multipleSelection.length;i++){
                            var obj = this.multipleSelection[i]
                             idList.push(obj.id)
                        }

                        teacherApi.batchRemove(idList).then(response =>{
                            this.$message({
                                type: 'success',
                                message: '删除成功！'
                            });
                            //刷新页面
                            this.fetchData();
                        })

                    })
                }
            },
            fetchData() {
                teacherApi.pageList(this.page, this.limit, this.searchObj)
                    .then(response => {
                        this.list = response.data.records;
                        this.total = response.data.total
                    })
            },
            // 改变每页记录数
            changePageSize(size) {
                this.limit = size
                this.fetchData()
            },
            //改变当前页
            changeCurrentPage(page) {
                this.page = page
                this.fetchData()
            },
            //清空
            resetData(){
                this.searchObj={};
            },
            //删除
            removeById(id){
                this.$confirm('此操作将永久删除该讲师信息，是否继续？','提示',{
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
                }).then(()=>{
                    teacherApi.removeTeacherId(id).then(response =>{
                        this.$message({
                            type: 'success',
                            message: '删除成功！'
                        });
                        //刷新页面
                        this.fetchData();
                    })

                })

            },

        }


    }


</script>

<style scoped>

</style>
